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Long weekend plans should go ahead in SA

Holiday makers in South Australia shouldn't cancel their plans for the long weekend because of the storms, floods and blackout, authorities say.

But they have been urged to be careful on the wet, busy roads and ensure their intended route and destination are clear of floodwaters.

"The October long weekend has always been a great time for South Australians to get out and about and enjoy the spring weather, although that may not be the case this weekend," Police Minister Peter Malinauskas said on Friday.

"We want to actively encourage South Australians to get on with their ordinary lives and spend this weekend with family and friends."

The powerful low pressure storm system that had ravaged SA since Wednesday had weakened on Friday and was moving on to the south-eastern states.

However, areas north of Adelaide remain flooded and more rain is forecast for Sunday and Monday.

Police Commissioner Grant Stevens said the October long weekend was a dangerous time on SA's roads, with five fatalities over the past four years.